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6. MAINTENANCE, TROUBLESHOOTING
6-2
6.2 Consumable Parts
6.2.1 Fuse replacement
The fuse in the Display Unit, Transceiver Unit, Distributor Unit and Rate-of-Turn Gyro
protects those units from overvoltage. If you cannot turn on the power, have a techni-
cian check if the fuse inside the Display Unit has blown. If the fuse has blown, find the
cause before replacing the fuse. If the fuse blows again, contact your dealer.
6.2.2 Product life
Unit
Fuse
Rating
Type Code No. Qty Remarks
Display
Unit
2A FGMB 2A
AC125V PBF
000-157-479-10 1 Inside unit
Transceiver
Unit
3A FGB01 3A
AC250V PBF
000-155-841-10 2 Inside unit
Distributor
Unit
5A FGB01 5A
AC250V PBF
000-155-840-10 2 Inside unit
Rate-of-
Turn Gyro
2A FGB01 2A
AC250V PBF
000-155-829-10 1 Inside unit
Unit Approx. Life (@55°C) Replacement Part
DS-600
Backlight
30,000 h Panel assy.: DS-600
(001-098-070-00)
DS-670
Rate-of-Turn Gyro
(Fiber Optic Gyro)
17,520 h Model: HOFG-1F (VER1.0)
WARNING
Use the correct fuse.
A wrong fuse can damage the equipment
or cause fire.